Foul-air escape or vent



No. 607,264. Patented July I2, |898.

` 1. MccnEEfY.

FOUL AIR ESCAPE 0B VENT.

(Application. led Nov. 5, 1897.) (No Model.)

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jrgl @i ,f4/735%; [1M l UNITED STATES PATENT OEEICEe JOSEPH MCOREERY, OFTOLEDO, OHIO.

FOUL-AIR ESCAPE OR VENT.

SPECIFICATION forming part of Letters Patent N o. 607,264, dated J' uly12, 1898. Application filed November 5, 189,7. Serial No. 657,527. (Nomodel.)

To all whom, t may concern:

Be it known that l, JosEPH-MCCREERY, a citizen of the United States,residing at Toledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Foul-Air Escapes orVents;

Y and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a new and useful improvement in foul-airescapes or vents; and it consists in the construction hereinafterpointed out.

In the annexed drawings, Figure l represents a side view of the device;Fig. 2, a vertical section, and Fig. 3 a top view.

In the drawings the letter A represents the top of a cylindrical hollowshaft. To the outside of this is secured the box B. This box is madewith a conical-shaped bottom b,which converges upwardly and closely fitsthe shaft A at the neck b. Four partitions or wings C are secured tothis bottom b and rise vertically therefrom. These wings O have narrowextensions c and enlarged substantially triangular-shaped bottomportions c. These partitions O are placed snugly against the shaft A,the extensions c terminating on a line with the top a of the shaft A.Secured to these partitions O is the top D of the box- B. This top D hasan inverted conical-shaped lower portion d and a vertical cylindricalneck d@ This top D is secured to the partition C, so that the lowerportion d rests against the bottom portions c/ of the partitions O, andthe neck d' rests against the outer edges of the extensions c. At thetop of the device a cowl E is secured to the neck CZ by strips e. Thiscowl E has the upper and lower conically-shaped portions e e2, meetingat e3, and the top and bottom of the cowl are open.

As thus described, this device has a clear air-passage up the shaft Aand out through the cowl E. There is also an air-passage or clear wayfrom bottom to top of the cowl around the neck d of the box B. There arealso several clear passage-ways through the box B from the bottom uparound the shaft A and out through the cowl. As the air strikes againstthis device not only is the foul air drawn up the shaft A by the forceof the air over the top of the cowl E, but also by air-pressure throughthe box B and between the box and the cowl. Divided as the box is by thepartition C, from whatever direction the wind comes air is forcedthrough the device and over the top of the shaft A. As clearly shown inFig. 3, vthe opening into the box is sector-shaped. Therefore the air iscrowded in toward the shaft A and driven with great pressure up thenarrow passageway between such shaft and the top D of the box B. Airalso being forced between the box B and the cowl E is forced upwardthrough the cowl E Aand over the top of the shaft A. These severalcurrents of air, being forced together over the top of the shaft A,induces an upward current through such shaft and carrieso'if the airrising into such shaft.

Having described my invention, what I claim is- The combination of theshaft, A, the box, B, surrounding the top of the shaft, having theconical bottom, b, the top, B, having the inverted conical-shaped lowerportion, d, and the vertical cylindrical neck, d', and the partitions orwings, C, having narrow extensions, o, and enlarged substantiallytriangularshaped bottom portions, c', such bottom portions being betweenthe bottom, b, and the portion, d, and the narrow extensions, c, beingbetween the shaft, A, and the neck, d', such extensions terminating on aline with the top of the shaft, A, and the cowl, E, secured to the topof the neck, d', the cowl, E, having the upper and lowerconically-shaped portions, e e2, meeting at e3, the top and bottom ofthe cowl being open, as set forth.

In testimony whereof I affix my signature in presence of. two witnesses.

JOSEPH MCOREERY.

IVitnesses:

CATHAEINE J. SNYDEE, CEAS. C. Dawson.

